Hello all, Is it possible to create a plugin for alsa-lib that would do the following: - I have an ALSA-supported sound card with an SPDIF input that provides 2 capture channels at 96 kHz. - These two signals are actually 4 channels at 48 kHz, multiplexed into two in order to trick a 2-ch hardware digital recorder to accept the signal. - The plugin is configured to use hw:N as a slave, and presents to the user a new device with 4 channels at 48 kHz, demultiplexed from its two inputs. In other words, the plugin has to 'open' the slave with modified parameters - the sample rate and period size requested by the user are doubled and the number of channels is halved - and to perform the conversion. There is no resampling involved, just moving samples from input buffers to output buffers. The preferred interface to the plugin would be mmapped. Is this possible, and if yes how ? I've been looking at http://www.alsa-project.org/alsa-doc/alsa-lib/pcm_external_plugins.html but that hasn't made me any wiser... If it can't be a plugin, what are the other options ? The reason I will need this is here: http://www.core-sound.com/4Mic/2.php TIA, -- FA Lascia la spina, cogli la rosa. ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
